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How many ways are there to place 55 differently colored balls into 5 identical urns if the urns can be empty?

* All 5 balls have to be used.

* An urn could contain multiple balls.

 Jun 24, 2020
 #1
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https://artofproblemsolving.com/videos/counting/chapter5/78

https://artofproblemsolving.com/videos/counting/chapter5/79

This is a distinguishablility problem, I can't help you but these videos might. 

 Jun 24, 2020

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